Secale cereale
Taxonomy: Angiospermae, Poales, Poaceae, Secale
Published: 2021-01-04
Pollen Description
Shape, Size and Aperture
pollen unit: monad, dispersal unit and peculiarities: monad, size (pollen unit): large (51-100 µm), size of hydrated pollen (LM): 41-50 µm, 51-100 µm, shortest polar axis in equatorial view (LM): -, longest polar axis in equatorial view (LM): -, shortest diameter in equatorial or polar view (LM): 41-50 µm, longest diameter in equatorial or polar view (LM): 51-100 µm, pollen class: ulcerate, polarity: heteropolar, P/E-ratio: -, shape: no suitable term, outline in polar view: circular, dominant orientation (LM): polar, P/E-ratio (dry pollen): -, shape (dry pollen): irregular, outline in polar view (dry pollen): irregular, infoldings (dry pollen): irregularly infolded, aperture number: 1, aperture type: porus, aperture condition: ulcerate, aperture peculiarities: operculum, annulus
Ornamentation and Structure
LM ornamentation LM: psilate, nexine: -, sexine: -, SEM ornamentation SEM: microechinate, suprasculpture SEM: -, TEM tectum: eutectate, infratectum: columellate, foot layer: continuous, endexine: absent, intine: monolayered, wall peculiarities: -, supratectal element: -
Miscellaneous
pollen coatings: absent, reserves in cytoplasm: starch, polysaccharide vesicles, cell number: 3-celled, Ubisch bodies: present
Annotations: shape hydrated: distal pole wider than the proximal pole; tectum with channels
Author(s) of diagnosis: Sam, Saskia; Heigl, Helmut
Pictures
1. inflorescence of Secale cereale
2. flowers of Secale cereale
3. upper focus
4. optical section
5. lower focus
6. pollen grain with vegetative nucleus and two sperm cells
7. hydrated pollen
8. hydrated pollen
9. hydrated pollen
10. polar view
11. equatorial view
12. aperture
13. exine surface
14. dry pollen grains
15. dry pollen grain in equatorial view
16. anther wall with Ubisch bodies
17. interapertural area of pollen wall
18. apertural area of pollen wall
19. pollen wall at transition of aperture and interapertural area
20. vegetative nucleus (right) and sperm cell
Picture legend
- inflorescence of Secale cereale, photographer: Sam, S.
- flowers of Secale cereale, photographer: Sam, S.
- upper focus - fresh, acetolyzed, unstained, photographer: Sam, S.
- optical section - fresh, acetolyzed, unstained, photographer: Sam, S.
- lower focus - fresh, acetolyzed, unstained, photographer: Sam, S.
- pollen grain with vegetative nucleus and two sperm cells - fresh, unfixed, aceto-carmine, photographer: Sam, S.
- hydrated pollen - fresh, glycerine, unstained, photographer: Heigl, H.
- hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
- hydrated pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
- polar view - fresh, DMP & critical point dried, photographer: Sam, S.
- equatorial view - fresh, DMP & critical point dried, photographer: Sam, S.
- aperture - fresh, DMP & critical point dried, photographer: Sam, S.
- exine surface - fresh, DMP & critical point dried, photographer: Sam, S.
- dry pollen grains - dry, sputter coated with gold, photographer: Sam, S.
- dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Sam, S.
- anther wall with Ubisch bodies - fresh, DMP & critical point dried, photographer: Sam, S.
- interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
- apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
- pollen wall at transition of aperture and interapertural area - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
- vegetative nucleus (right) and sperm cell - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Sam, S.
Literature
- (1994) Exkursionsflora von Österreich : 1180
- (1998) Preparing living pollen material for scanning electron microscopy using 2,2-dimethoxypropane (DMP) and criticalpoint drying. Biotechnic Histochem 73: 137–143
Copyright and Citation
Cite this publication as:
Sam S., Heigl H. 2021. Secale cereale. In: PalDat - A palynological database. https://www.paldat.org/pub/Secale_cereale/304794;jsessionid=4C1F13C62AE4FB65BEC19715A0AAFD8B; accessed 2024-04-19